WP_Theme::get_allowed( int $blog_id = null ): string[]

1664	public static function get_allowed( $blog_id = null ) {1665		/**1666		 * Filters the array of themes allowed on the network.1667		 *1668		 * Site is provided as context so that a list of network allowed themes can1669		 * be filtered further.1670		 *1671		 * @since 4.5.01672		 *1673		 * @param string[] $allowed_themes An array of theme stylesheet names.1674		 * @param int      $blog_id        ID of the site.1675		 */1676		$network = (array) apply_filters( 'network_allowed_themes', self::get_allowed_on_network(), $blog_id );1677		return $network + self::get_allowed_on_site( $blog_id );1678	}